Construction Tip For Spark Plug Wire RF Shield Installation

[carey shurley]

I suggest that if you're installing the RF shield on the spark plug wire, that you alter the process for re-installing the spark plug boot.

Currently the instructions say to reinstall the copper spark plug spring back into the original hole in the spark plug wire. I've now seen several models, where this does not make proper contact with the core of the spark plug wire, which makes the engine hard if not impossible to start because it has no spark.

I'm going to make a revision recommending that the spring be pressed into the spark plug wire in a different position, at least 10 degrees from the original. It has to be exactly centered in the wire, but this fits tightly and will prevent any spark problems. An alternative is to use the optional shielded plug cap, which threads into the end of the plug wire.

I suspect the spring going back in loosely is contributing to the spark arcing that a few people have encountered.

[dperry]

I had that problem. We repositioned the wire which stopped the arcing but made the motor much harder to start. i will checkit again to make sure it is seated correctly.

Also I am getting lit up with the voltage dector around the grey coil is this ok? as it is the only place it lights up (does not light up on spark plug cap).

[bigrcr]

That's OK as long as it does not emit very far from that coil (less than 3 MM) and does not effect other items in the process (the throttle rod above it) so that it can be fed back into the radio tray area.

Later,

[hercdriver7777]

Ok, I have the light going off right in the middle of throttle rod but not the coil. How do I cure that?

[bigrcr]

I've seen the same thing. It's an inter-mitten signal right on the throttle rod. It has not caused any undue problems and this does not emit to the servo, wiring, etc. It's most probably caused by the rod and coil in close proximity with plastic on each end of the rod, setting up a field. You could ground the throttle rod (solder a flexible wire to the rod and take it to ground) or move the coil, but as I said I've found no problem with it and believe it unnecessary.